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EWG's Tap Water Database — 2019 UPDATE

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Manganese

San Gabriel County WD

Manganese is a naturally occurring element that is common in food and drinking water. Excessive manganese exposures may impair children's attention, memory and intellectual capacity. Click here to read more about manganese.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND50ND
2013ND10ND
2014ND20ND
2015ND30ND
2016N/A00N/A
2017ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 100 ppb

The EWG Health Guideline of 100 ppb for manganese was defined by the state of Minnesota as a health risk limit, the concentration of a contaminant that can be consumed with little or no risk to health. This health guideline protects against harm to the brain and nervous system.

ppb = parts per billion

All test results

Date Lab ID Result
2012-06-043761-011-0830ND
2012-06-043761-010-1130ND
2012-06-043761-009-1150ND
2012-06-043761-001-0845ND
2012-06-043761-007-1100ND
2013-05-243761-020-1125ND
2014-06-173761-020-1020ND
2014-09-259588-001-0915ND
2015-06-113761-011-0800ND
2015-06-113761-010-0845ND
2015-06-113761-007-0905ND
2017-06-083761-020-1030ND
2017-10-263761-009-1000ND